JP2002094683A - Communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To significantly reduce the time required for overwriting a software at a terminal station storage part by copying a software between the storage parts on two surfaces of a terminal station, collectively for all stations or with a terminal station designated, which is prepared for considering a remote overwriting (for example, a software in a terminal station is overwritten under a direction from a regulation station). SOLUTION: A simultaneous direction control system is installed in a regulation station, with the simultaneous directions classified for simultaneous transmission of a software between the storage parts of terminal stations. The terminal stations, on receiving the simultaneous direction, copy a software between the storage parts on two surfaces.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a software (hereinafter referred to as "software") rewriting method for a terminal station storage unit in a communication system.

[0002]

2. Description of the Related Art FIG. 2 is a block diagram showing a configuration of a conventional communication system.

Reference numerals 1 ¹ to 1 ^{n denote} terminal stations, reference numeral 2 denotes a terminal (personal computer) of a jig for rewriting software in a terminal station storage unit, and reference numeral 3 denotes a disaster prevention communication network. Reference numeral 4 denotes an A storage unit, which operates according to software stored in the A storage unit. Reference numeral 5 denotes a B storage unit, which is provided as a spare for the A storage unit 4. Conventionally when changing the software of the terminal station 1 ¹ to 1 ^n,
Terminal (PC) 2 on the telephone line in the network
After connecting the call by e.g. dialing a terminal station 1 ^1, further rewriting the software A storage unit 4. Also, in the case where the rewritten new software has not been confirmed in the actual operation, the B storage unit 5 uses the conventional software as it is, and if there is a problem, the B storage unit 5 is replaced with the A storage unit 4.
To keep to roll back by copying, hereinafter similarly sequentially rewrites the call A storage unit 4 to the terminal station 1 ² to 1 ^n. Once a while confirmed that a operate well at A storage unit 4, to connect the by-station terminal station by dial-up to connect the terminal 2 again, the terminal station 2 ¹ to 2 ⁿ of A
The contents of the storage unit 4 are copied to the B storage unit 5.

[0004]

In the conventional communication system, the rewriting of the software in the terminal station storage unit is performed by calling one station at a time, for example, by dialing. Therefore, it takes an enormous amount of time to rewrite the software of all the terminal stations. Was. Therefore, in the present invention, the time required for rewriting the software in the terminal station storage unit is significantly reduced by performing the rewriting of the software of the terminal stations collectively for all the terminal stations or for the designated terminal stations. The purpose is to.

[0005]

In order to achieve the above object, the present invention provides a simultaneous command control device having a simultaneous command function for a terminal station, which is an important function of a communication system (for example, a disaster prevention communication system). And a type for performing batch transmission of software between the storage units of the terminal station having two sides according to the type of the simultaneous command.

[0006]

FIG. 1 is a block diagram showing a configuration of a communication system according to one embodiment of the present invention. This will be described with reference to FIG.

[0007] When modifying the software of the terminal station 1 ¹ to 1 ^n, first connect the terminal 2 to the telephone line of disaster communication network 3, modify the software calls A storage unit 4 to the terminal station 1 ¹ by dialing I do. If the security of the modified software is confirmed, the terminal station 1 ²
.About.1 ⁿ are successively called and the software of the A storage unit 4 is modified. On the other hand, if the security of the corrected software is not sufficiently confirmed, only the software in the A storage unit 4 is rewritten, and when a problem occurs, the software in the B storage unit 5 is transmitted to the A storage unit 4 so that the A storage unit 4 can be returned to the original state (the state in which the software before rewriting is stored).

When the operation is performed for a while in the A storage unit 4 and the safety is confirmed, the operation console 8 connected to the simultaneous command control device 7 of the control station 6 sends all terminal stations 11 ¹ to 1 ^{n the} terminal stations. A specially prepared simultaneous command is issued to collectively copy software from the A storage unit 4 to the B storage unit 5. All terminal stations 1 ¹ to 1
ⁿ receives this simultaneous command (storage unit rewriting command) and performs processing of copying the software of the A storage unit 4 to the B storage unit 5.
Then, each terminal station self-checks whether the software in the B storage unit of the own station is the same as the software in the A storage unit. As a result of the self-check, when the software in the B storage unit and the software in the A storage unit are the same, a work completion signal is transmitted to the simultaneous command control device 7.

The control station 6 confirms that the rewriting of the terminal station has been completed by receiving the work completion signals of the terminal stations 1 ¹ to 1 ⁿ and ends the simultaneous command.

[0010]

According to the present invention, B is stored in the A storage unit of the terminal station.
Copying of the software of the A storage unit to the storage unit or from the B storage unit can be performed collectively for all terminal stations instead of one station at a time. Therefore, it is possible to significantly reduce the time for rewriting software.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a communication system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a communication system as an example of the related art.

[Explanation of symbols]

¹ 1 ~1 ^n: terminal station, 2: Terminal (PC),
3: disaster prevention communication network, 4: A storage unit, 5: B storage unit, 6: control station, 7: simultaneous command control device, 8: operation console.

Claims (1)

[Claims] 1. A communication system including a master station and a plurality of terminal stations connected to the master station via a communication network, each of the terminal stations having a first storage unit and a second storage unit. In the master station, an operation console for selecting one or more of the terminal stations, and a simultaneous command control device for performing a simultaneous command to the terminal station selected by the operation console, the terminal selected by the simultaneous command A communication system characterized in that software stored in the second storage unit is rewritten simultaneously so as to be the same as software stored in the first storage unit for all stations.